Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-odor polypropylene material with ultrahigh melt index and preparation method thereof

A polypropylene, low odor technology, applied in the field of polypropylene materials with low odor and ultra-high melting index and its preparation, can solve the problems of complex process, unsatisfactory melting index, high odor, etc., and achieves simple process and high melting index. High, low odor effect

Inactive Publication Date: 2021-03-12
中广核俊尔(上海)新材料有限公司
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a low-odor ultra-high melting index polypropylene and its preparation method to overcome the problems in the prior art such as relatively large odor, insufficient melting index and complex process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-odor polypropylene material with ultrahigh melt index and preparation method thereof
  • Low-odor polypropylene material with ultrahigh melt index and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0028] A low-odor ultra-high melting point polypropylene, the composition of the raw material formulations of Examples 1-3 is listed in Table 1. According to the formula in Table 1, the polypropylene is sent into the barrel of the twin-screw extruder from the main feed, and the peroxide initiator is quantitatively added in the third zone of the twin-screw extruder using a liquid pump , adding the antioxidant in the seventh zone by side feeding, under the set temperature, screw speed, feeding speed and other process parameters, the raw materials are melted, blended, extruded, cooled, and granulated to obtain Modified polypropylene material. The extruder used has a screw diameter of 35mm and an aspect ratio of 48. The temperatures of the 14 temperature zones from the feeding port to the machine head are 120°C, 180°C, 200°C, 200°C, 200°C, and 200°C. °C, 200°C, 200°C, 200°C, 200°C, 200°C, 200°C, 180°C, 180°C The speed of the host machine is 400 rpm, and the vacuum degree is -0.08...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Melt fingeraaaaaaaaaa
Melt fingeraaaaaaaaaa
Login to View More

Abstract

The invention relates to low-odor polypropylene with an ultrahigh melt index and a preparation method thereof. The low-odor polypropylene is prepared from the following raw materials in percentage bymass: 97%-99.5% of polypropylene, 0.05%-1.5% of a peroxide initiator and 0.1%-2% of an antioxidant, wherein the peroxide initiator is one or a mixture of more selected from the group consisting of benzoyl peroxide, tert-butyl peroxybenzoate, di-tert-butyl peroxide and dicumyl peroxide. The preparation method is simple in process; the peroxide initiator and the antioxidant are added in sections, the peroxide initiator is added in the third section of a twin-screw extruder, and the antioxidant is added in the seventh area by using a side feeding method, so the consumption of peroxide and the smell of the ultrahigh-melt-index polypropylene material are reduced, and the effect of the antioxidant is exerted to the maximum extent; and the prepared polypropylene material has the characteristics of low cost, high and stable melt index (1500+ / -100g / min) and low odor.

Description

technical field [0001] The invention belongs to the field of polypropylene modification, and in particular relates to a low-odor ultra-high melting point polypropylene material and a preparation method thereof. Background technique [0002] Under the influence of the new crown epidemic in 2020, people have realized the importance of masks in reducing the spread of the virus in the process of fighting the epidemic. The mask can play the role of isolating viruses because of the meltblown layer in the middle of the mask, and the material of the meltblown layer is ultra-high melting index polypropylene. The melt index of ultra-high melting index polypropylene is generally MI≥500g / 10min, but the polypropylene used for the production of meltblown cloth generally requires a melt index of 1500±100g / 10min, and there is also a corresponding national standard GB / T30923-2014 for super There are regulations on the melt index performance of high melt index polypropylene. [0003] There ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/12C08K5/134C08K5/526
CPCC08K5/1345C08K5/526C08L2201/02
Inventor 于志远张磊王海华沈岳新陈晓敏
Owner 中广核俊尔(上海)新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com